Match the pack

The card is titled Battery profile. The demo draws three buttons, numbered 1, 2 and 3, and the selected one is 1. Cell count on that profile is 0, from 0 to 12. The hint says 0 means detect when the pack is plugged in. Capacity on that profile starts at 1500 mAh. Minimum cell voltage starts at 3.30 V, the warning at 3.50 V, the maximum at 4.20 V, and the detect voltage at 4.25 V.

Profile 2 is seeded as the long-range pack. Its cell count is 6, its capacity is 8000 mAh, its minimum cell voltage is 2.80 V and its maximum is 4.20 V. The seed does not change that profile's warning or detect voltage, so those stay at 3.50 V and 4.25 V. Profile 3 is another copy of the starting profile, so its cell count is also 0.

The footer says each profile has its own cell count, cell voltages and capacity, plus idle, hover, cruise and failsafe throttle. With battery profile auto-switch on, it says the flight controller picks the profile whose cell count matches the pack when it is plugged in. The feature switch is on the Configuration tab, and it is off in the demo's starting set.

The picture uses those three stored counts. The pack slider starts at 6 and auto-switch starts off, so the lamp says Editing 1. Turn auto-switch on and the lamp says Profile 2, because 6 is the only stored count above 0 that matches. Move the pack off 6 and the lamp says No match. INAV's battery notes say a profile is selected automatically only when its cell count is greater than 0, and that a miss keeps the last selected profile. In the picture that last profile is 1.

Tapping another profile asks first. The clean question is Switch to battery profile 2, or whichever number you tapped. Nothing is sent until you press Switch. Cancelling leaves the board on the profile it was already using.

If the Power tab has unsaved edits, the question is Discard changes. The body says switching battery profile discards the unsaved changes on this tab. Keep editing leaves you on the profile you were changing, with the edit still there. Discard and switch throws that edit away. A cell count you typed and then discarded never reaches the board, and the profile you left keeps the count it had.

While the craft is armed the buttons do nothing and the line reads Disarm to switch battery profiles. The request that changes the profile is refused while armed. Disarm, then switch.

Copy battery profile is the other action on the card. It asks for a from profile and a to profile, and it refuses the same number with Pick two different profiles. The body says the destination's cell count, cell voltages, capacity, throttle and power limits are replaced with the source's and saved. The flight controller switches profiles while copying, then goes back to the profile that was active when you started. The button is off while armed, and it is off while the tab is dirty, with the hint Save or discard the changes on this tab first.

Open Power on INAV. The battery profile card is the first one, and it is absent when the board has no battery profiles. Betaflight has none: its packs are saved in the app, and it detects the cell count itself. Chrome or Edge connects over USB or Bluetooth. Android adds Wi-Fi. iPhone uses Bluetooth or Wi-Fi and has no USB host.

Set a cell count above 0 on each pack you want auto-switch to recognise, then turn Battery profile auto-switch on and save. A profile left at 0 cells is the detect hint, not a pack the feature can choose. Power limits are stored with the active profile and are a different job: they cut the throttle when the draw is high. Throttle compensation is the strength field on the same tab, and it raises the throttle as the voltage falls.